package com.imooc.controller;

import com.imooc.config.ProjectUrl;
import com.imooc.config.WechatOpenConfig;
import com.imooc.enums.ResultEnum;
import com.imooc.exception.SellException;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.exception.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.api.impl.WxMpServiceImpl;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.net.URLEncoder;

/**
 * Create By Liuqz
 *
 * @date 2018/6/4 23:50
 */
@Controller
@RequestMapping(value = "/wechat")
@Slf4j
public class WeChatController {

    @Autowired
    private WxMpService wxMpService;

    @Autowired
    private WxMpService wxOpenService;

    @Autowired
    private ProjectUrl projectUrlConfig;


    /**
     * 公众号内跳转地址,获取用户的信息
     * @param returnUrl
     * @return
     */
    @GetMapping(value = "/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl){
        //跳转路径
        String url = projectUrlConfig.getWechatMpAuthorize()+"/sell/wechat/userInfo";
        String redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url,WxConsts.OAuth2Scope.SNSAPI_BASE,URLEncoder.encode(returnUrl));
        log.info("【微信网页授权】 获取code, result={}",redirectUrl);
        return "redirect:"+ redirectUrl;
    }

    /**
     * 公众号获取openid,进行支付操作
     * @param code
     * @param returnUrl
     * @return
     */
    @GetMapping(value = "/userInfo")
    public String userInfo(@RequestParam("code") String code,
                         @RequestParam("state") String returnUrl){
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try{
            wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        }catch (WxErrorException e){
            log.error("【微信网页授权】 {}",e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
        }
        String openId = wxMpOAuth2AccessToken.getOpenId();
        return "redirect:" + returnUrl + "?openid=" + openId;
    }

    /**
     * 网页中进行微信登陆操作
     * @param returnUrl
     * @return
     */
    @GetMapping(value = "/qrAuthorize")
    public String qrAuthorize(@RequestParam("returnUrl") String returnUrl){
        String url = projectUrlConfig.getWechatOpenAuthorize()+"/sell/wechat/qrUserInfo";
        String redirectUrl = wxOpenService.buildQrConnectUrl(url, WxConsts.QrConnectScope.SNSAPI_LOGIN,URLEncoder.encode(returnUrl));
        return "redirect:" + redirectUrl;

    }

    /**
     * 网页扫码登陆后的回掉地址,并带着openid调到回调地址
     * @param code
     * @param returnUrl
     * @return
     */
    @GetMapping(value = "qrUserInfo")
    public String qrUserInfo(@RequestParam("code") String code,
                             @RequestParam("state") String returnUrl){
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try {
            wxMpOAuth2AccessToken = wxOpenService.oauth2getAccessToken(code);
        } catch (WxErrorException e){
            log.error("【微信网页授权】 {}",e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
        }
        log.info("WxMpOAuth2AccessToken={}",wxMpOAuth2AccessToken);
        String openId = wxMpOAuth2AccessToken.getOpenId();
        return "redirect:" + returnUrl + "?openid=" +openId;
    }
}
